Chemical Bonds Review

WHAT DOES THE SYMBOL FOR AN ELEMENT MEAN IN AN ELECTRON DOT DIAGRAM / LEWIS DOT STRUCTURE?

NUCLEUS AND ALL NON-VALENCE ELECTRONS

WHAT IS THE RATIO OF THE FORMULA KI?

1 TO 1 RATIO

IN THE COMPOUND MGCL2 WHAT DOES THE SUBSCRIPT REPRESENT?

2 ATOMS OF CHLORINE

WHAT ARE THE PROPERTIES OF SODIUM CHLORIDE?

METAL, CONDUCTOR OF ELECTRICITY, MALLEABLE, DUCTILE

WHEN TWO ATOMS OF THE SAME NONMETAL REACT, WHAT DO THEY OFTEN FORM?

DIATOMIC MOLECULE

WHAT HAPPENS TO THE ELECTRONS IN A POLAR COVALENT BOND?

SHARED UNEQUALLY; ONE ELEMENT IS PULLING THE ELECTRONS TOWARDS IT

WATER HAS A HIGHER BOILING POINT THAN EXPECTED BECAUSE OF WHAT?

STRONG ATTRACTIONS BETWEEN POLAR WATER MOLECULES

WHY ARE WATER MOLECULES POLAR AND CARBON DIOXIDE MOLECULES ARE NONPOLAR?

WATER HAS A HIGHER BOILING POINT THAN CARBON DIOXIDE

WHAT ELEMENTS ARE MOST LIKELY TO FORM MORE THAN ONE TYPE OF ION?

TRANSITION METALS

WHAT IS A METALLIC BOND?

BOND BETWEEN A METAL CATION AND A SHARED POOL OF ELECTRONS

WHY CAN MANY METALS BE DRAWN INTO THIN WIRES WITHOUT BREAKING?

CATIONS ARE STILL SURROUNDED BY ELECTRONS WHEN THEY SHIFT THEIR POSITIONS IN THE

LATTICE

WHAT IS AN ALLOY?

TWO METALS COMBINED

WHAT WOULD HAPPEN IF YOU INCREASED THE AMOUNT OF CARBON IN STEEL?

CARBON MAKES THE LATTICE HARDER AND STRONGER

IF A METAL HAS MORE VALENCE ELECTRONS WILL IT MAKE THE METALLIC BOND WEAKER OR STRONGER?

STRONGER!!

THE STRUCTURE IN A METAL LATTICE CAN BE DESCRIBED AS CATIONS SURROUNDED BY A POOL OF SHARED ELECTRONS. WHAT TWO

PROPERTIES OF METALS CAN BE EXPLAINED BY THIS STRUCTURE?

MALLEABLE, DUCTILE, CONDUCTS ELECTRICITY

MIXING MAGNESIUM AND ALUMINUM TOGETHER PRODUCES AN EXCELLENT LIGHTWEIGHT MATERIAL FROM WHICH TO MAKE AIRPLANE PARTS. WHAT IS THIS TYPE OF MIXTURE CALLED?

ALLOY

WATER DROPLETS TEND TO HAVE A SPHERICAL, ROUND SHAPE. EXPLAIN THIS FACT IN TERMS OF THE POLAR NATURE OF WATER

MOLECULES.

WATER IS POLAR – STRONG UNEQUAL ATTRACTIONS; MOLECULES ON THE SURFACE OF WATER DROPLETS ARE PULLED TOWARD THE CENTER BY THE ATTRACTIONS TO WATER MOLECULES BELOW THE

SURFACE

HOW DOES THE ABILITY OF METALS SUCH AS COPPER AND ALLOYS SUCH AS STEEL TO BE DRAWN INTO WIRES AFFECT THE POSSIBLE

USES OF THESE MATERIALS?

CAN BE DRAWN INTO WIRES TO CONDUCT ELECTRICITY

WHAT IS A TYPICAL PROPERTY OF AN IONIC COMPOUND?

TENDENCY TO SHATTER WHEN STRUCK

HOW ARE METALLIC BONDS SIMILAR TO IONIC BONDS?

AN ATTRACTION BETWEEN POSITIVELY CHARGED AND NEGATIVELY CHARGE PARTICLES